Schreiner J, Götz-Neunhoeffer F, Neubauer J, Jansen D (2020)
Publication Language: English
Publication Type: Journal article, Online publication
Publication year: 2020
Book Volume: 185
Article Number: 105432
Journal Issue: 185
DOI: 10.1016/j.clay.2019.105432
Different amounts and types of metakaolin were analyzed and applied for the hydrothermal synthesis of 11 Å
tobermorite. All synthesized samples were investigated by means of powder XRD combined with Rietveld refinement.
Al-substituted 11 Å tobermorite was successfully synthesized on the basis of a broad range of compounds
characterized by a varying content of metakaolin. Katoite was present depending on the amount of
supplied Al3+, which was determined by the dosage of metakaolin. Minor crystalline components included in the
two types of metakaolin sources varied greatly in their reactivity under hydrothermal conditions. Despite a
different degree of purity, the two types of metakaolin showed corresponding effects at moderate dosages but
contrary effects at higher dosages as for the synthesis of 11 Å tobermorite. The domain morphology of tobermorite
could be associated with Al3+ incorporation for low dosages of metakaolin represented by up to 2 wt.-
% Al2O3 in the dry mix. By contrast, Al3+ affected tobermorite lattice parameters at equivalent and even at
higher dosages with c reaching 22.95 Å at 12 wt.-% Al2O3 in the dry mix.
APA:
Schreiner, J., Götz-Neunhoeffer, F., Neubauer, J., & Jansen, D. (2020). Hydrothermal synthesis of 11 Å tobermorite – Effect of adding metakaolin to the basic compound. Applied Clay Science, 185(185). https://dx.doi.org/10.1016/j.clay.2019.105432
MLA:
Schreiner, Jürgen, et al. "Hydrothermal synthesis of 11 Å tobermorite – Effect of adding metakaolin to the basic compound." Applied Clay Science 185.185 (2020).
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